CVE-2026-56327 | Capgo before 12.128.2 contains an information disclosure vul… | CVSS 5.3 MEDIUM

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the public.invite_user_to_org RPC function that allows unauthenticated attackers to enumerate organization existence by observing distinct error responses. Attackers can call the SECURITY DEFINER function with a publishable API key to determine if an organization ID exists based on NO_ORG versus NO_RIGHTS responses, enabling tenant enumeration attacks.

Metadata

CVE ID: CVE-2026-56327
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 13:06 UTC
Published: 2026-06-30 22:08 UTC
Last updated: 2026-06-30 22:08 UTC
Primary CWE: CWE-203
Observable Discrepancy
Vendor / Product: Capgo / Capgo
Sources: cve.org · NVD

Severity & Metrics

5.3 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products (1)

Vendor	Product	Platform	Versions
Capgo	Capgo	—	0 < 12.128.2, 12.128.2

Weakness (CWE)

CWE	Source	Description
CWE-203	cna	Observable Discrepancy

CVSS scores (2)

Score	Severity	Version	Source	Vector
6.9	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
5.3	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References (2)

GitHub Security Advisory (GHSA-35q8-ghfg-vp6m) https://github.com/Cap-go/capgo/security/advisories/GHSA-35q8-ghfg-vp6m
VulnCheck Advisory: Capgo - Unauthenticated Organization Existence Oracle via public.invite_user_to_org RPC https://www.vulncheck.com/advisories/capgo-unauthenticated-organization-existence-oracle-via-public-invite-user-to-org-rpc